CN204116881U

CN204116881U - There is the supervisory system of easily extensible I/O interface

Info

Publication number: CN204116881U
Application number: CN201420585765.1U
Authority: CN
Inventors: 兰盾; 王德鹏
Original assignee: Sichuan Jiuzhou Electric Group Co Ltd
Current assignee: Sichuan Jiuzhou Investment Holding Group Co.,Ltd.
Priority date: 2014-10-11
Filing date: 2014-10-11
Publication date: 2015-01-21
Anticipated expiration: 2024-10-11

Abstract

The utility model relates to monitoring technique field, and disclose a kind of supervisory system with easily extensible I/O interface, this system comprises: main control equipment, single-chip microcomputer and at least one watch-dog; Wherein, the processor of described main control equipment is connected with described single-chip microcomputer by common I/O interface links; Described single-chip microcomputer is provided with multiple expansion I/O interface, and each described watch-dog is connected with at least one expansion I/O interface of described single-chip microcomputer; Described watch-dog is established a communications link by the expansion I/O interface of described single-chip microcomputer and described main control equipment.The utility model utilizes the extended capability of single-chip microcomputer, main control equipment is made only to use two general purpose I/O interface can obtain multiple expansion I/O interface, and then make system extension not be subject to master control equipment I/O number quantitative limitation, access multiple watch-dog as required and dynamic adjustment, there is the outstanding advantages such as structure is simple, cost is low, easy to operate.

Description

There is the supervisory system of easily extensible I/O interface

Technical field

The utility model relates to monitoring technique field, is specifically related to a kind of supervisory system with easily extensible I/O interface.

Background technology

At present, in medium-and-large-sized supervisory system, main control equipment will communicate with multiple dissimilar watch-dog usually, because the problem of signal format, the I/O interface that often kind of watch-dog provides is not quite similar.Be all directly directly access input/output signal from the I/O port of main control equipment processor due to what adopt in prior art, the input and output type of each I/O port is just fixing in the design, and the later stage just needs to redesign whole circuit if any change.On the other hand, the watch-dog of small size needs to use a point plate design, if carry out expansion I/O interface by the mode directly increasing main control equipment processor I/O port number, can cause again connecting relative complex between multiple points of plates, and the stability of circuit is also influenced.And in extensive Full Featured watch-dog, because multiplexing I/O port pin all can not do I/O interface use, the situation that I/O interface is not enough may be had.Because of word, between existing main control equipment and watch-dog, directly by the mode of main control equipment processor I/O port connection watch-dog, expansion is carried out to system and have significant limitation, can not meet the needs of user.

Utility model content

For the above-mentioned defect existed in prior art, technical problem to be solved in the utility model how effectively to expand the I/O interface of main control equipment access watch-dog.

For solving the problems of the technologies described above, the utility model provides a kind of supervisory system with easily extensible I/O interface, and this system comprises: main control equipment, single-chip microcomputer and at least one watch-dog; Wherein, the processor of described main control equipment is connected with described single-chip microcomputer by common I/O interface links; Described single-chip microcomputer is provided with multiple expansion I/O interface, and each described watch-dog is connected with at least one expansion I/O interface of described single-chip microcomputer; Described watch-dog is established a communications link by the expansion I/O interface of described single-chip microcomputer and described main control equipment.

Preferably, described main control equipment is embedded device.

Preferably, the processor of described main control equipment is HI3512 processor.

Preferably, at least one watch-dog described comprises: the equipment of panalarm, switching value equipment, tripping operation opertaing device, temperature sensor or other Sensor monitoring types.

Preferably, described single-chip microcomputer is 8 single-chip microcomputers.

Preferably, described single-chip microcomputer is STC series monolithic, 51 single-chip microcomputers or PIC series monolithic.

Preferably, the processor of described main control equipment is connected by two common I/O interfaces with described single-chip microcomputer, one of them transmission of control signals, another transmission of data signals.

Preferably, the Modular circuit design of described single-chip microcomputer is independent subcard, and described subcard is connected by common I/O Interface realization with the motherboard at the processor place of described main control equipment.

The utility model utilizes the extended capability of single-chip microcomputer, by the connection of chip microcontroller main control equipment and multiple watch-dog with communicate, main control equipment is made only to use two general purpose I/O interface can obtain multiple expansion I/O interface, and then make system extension not be subject to master control equipment I/O number quantitative limitation, access multiple watch-dog as required and dynamic adjustment, there is the outstanding advantages such as structure is simple, cost is low, easy to operate.

Accompanying drawing explanation

Fig. 1 is the structural representation of supervisory system in an embodiment of the present utility model.

Embodiment

As employed some vocabulary to censure specific components in the middle of instructions and claim.Those skilled in the art should understand, and hardware manufacturer may call same parts with different noun.This specification and claims are not used as with the difference of title the mode distinguishing parts, but are used as the criterion of differentiation with parts difference functionally.Instructions subsequent descriptions is for implementing better embodiment of the present utility model, and right described description is to illustrate for the purpose of rule of the present utility model, and is not used to limit scope of the present utility model.Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, described embodiment is for implementing better embodiment of the present utility model, and described description is to illustrate for the purpose of rule of the present utility model, and is not used to limit scope of the present utility model.Protection domain of the present utility model should be as the criterion with the claim person of defining; based on the embodiment in the utility model; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.

In the supervisory system of prior art, the I/O of main control equipment processor is designed to directly be connected with the I/O of watch-dog, this strongly limits the extended mode of system.In embodiment of the present utility model, provide a kind of supervisory system of easily extensible I/O interface, as shown in Figure 1, this system comprises: main control equipment 1, single-chip microcomputer 2 and at least one watch-dog 3; Wherein, the processor of main control equipment 1 is connected with single-chip microcomputer 2 by two common I/O interface links, single-chip microcomputer 2 is provided with multiple expansion I/O interface, each watch-dog 3 is connected with at least one expansion I/O interface of single-chip microcomputer 2, and watch-dog 3 is established a communications link by the expansion I/O interface of single-chip microcomputer 2 and described main control equipment.

Of the present utility modelly embodiments provides the technical scheme that a kind of common I/O interface based on limited quantity obtains multiple expansion I/O interface, system of the present utility model is applied to monitoring technique field, be combined with multiple watch-dog, the functions such as warning, tripping operation control, temperature control and digital output modul can be realized.

Preferably, main control equipment is embedded device.In preferred embodiment of the present utility model, HI3512 processor (ARM9) selected by the processor of main control equipment, main control equipment also can with embedded OS to provide system process more flexibly and extended mode, operating system selects the system of current maturation, not main improvement of the present utility model, no longer expands explanation at this.Certainly, relevant technical staff in the field also can select embedded device and the processor of other models as required, does not do concrete restriction here.

Further, single-chip microcomputer is preferably 8 single-chip microcomputers, selects the universal equipment that interface is many as far as possible.The single-chip microcomputer selecting interface many can connect watch-dog as much as possible, the I/O interface of processor I/O and watch-dog connection single-chip microcomputer that universal equipment then makes single-chip microcomputer connect main control equipment has fixing pattern and standard to follow, and facilitates the enforcement of system, expansion and maintenance.The preferred STC series monolithic of single-chip microcomputer, 51 single-chip microcomputers or PIC series monolithic etc. in the utility model, relevant technical staff in the field also can select the single-chip microcomputer of other models as required, does not do concrete restriction here.

In a preferred embodiment, single-chip microcomputer designs as independently functional module, and its Modular circuit design becomes independent subcard, and subcard is connected by common I/O Interface realization with the motherboard at main control equipment processor place.

Watch-dog is established a communications link by the expansion I/O interface of single-chip microcomputer and described main control equipment.Preferably, watch-dog 3 comprises the equipment of panalarm 31, switching value equipment 32, the multiple different monitoring type of tripping operation opertaing device 33, temperature sensor 34 or other sensors.Relevant technical staff in the field also can add the watch-dog of other models as required, does not do concrete restriction here.

The processor of main control equipment 1 and the connection of single-chip microcomputer 2 are common I/O interfaces, except carry out basis communication except, further by this Interface realization to the configuration of single-chip microcomputer and definition.Each watch-dog, as produced the equipment 31 of alerting signal, the equipment 32 producing on-off model and tripping operation opertaing device 33 sensor 34 etc., first be connected with single-chip microcomputer 2 by the expansion I/O interface of single-chip microcomputer 2, realize being connected with the indirect of main control equipment 1 and communicate by single-chip microcomputer 2 subsequently, watch-dog receives or transmission signal mainly through the expansion I/O interface of single-chip microcomputer 2.Signal comprises: the input and output mode of warning, On-off signal, tripping operation control, sensing data and high level/low level trigger mode etc., concrete signal content is determined according to the type of watch-dog and function, does not do concrete restriction at this.The signal format of different watch-dogs and interface mode may be distinct, changed as intermediate equipment by single-chip microcomputer 2 to it, thus make main control equipment 1 only utilize common I/O interface just can complete all communication and controlling functions.

Communication between main control equipment 1 and single-chip microcomputer 2 is transmitted by common (general) I/O interface, preferably adopts two common I/O interfaces, one of them transmission of control signals, another transmission of data signals.Control interface is controlled by the processor of main control equipment, sets high level at ordinary times, and set low level when transmitting data, now single-chip microcomputer 2 imports data into data-interface, and after having passed a byte, main control equipment draws high level.Each bit stealing 500ms or make shorter time by oneself in byte.Control simulation data communication can be distinguished: single-chip microcomputer end detects that namely control port low level produces interruption at main control equipment end and single-chip microcomputer end, then the time transmits data one by one to main control equipment according to the rules, pass after 8 positions form a byte and stopped, waited for that next interruption produces.And main control equipment end is responsible for the level arranging control interface, after dragging down level, from data-interface, read data, run through one directly after draw high, wait for and drag down the data transmission that level starts second byte again.The concrete communication protocol used of data transmission can be self-defined, and such as second byte 0X01 representative transmits sensing data, and 0X02 representative transmits alert data, and protocol section is not the emphasis that the utility model improves, and no longer expands explanation at this.

Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a supervisory system for easily extensible I/O interface, is characterized in that, described system comprises: main control equipment, single-chip microcomputer and at least one watch-dog; Wherein,

The processor of described main control equipment is connected with described single-chip microcomputer by common I/O interface links;

Described single-chip microcomputer is provided with multiple expansion I/O interface, and each described watch-dog is connected with at least one expansion I/O interface of described single-chip microcomputer;

Described watch-dog is established a communications link by the expansion I/O interface of described single-chip microcomputer and described main control equipment.

2. the system as claimed in claim 1, is characterized in that, described main control equipment is embedded device.

3. system as claimed in claim 2, it is characterized in that, the processor of described main control equipment is HI3512 processor.

4. the system as claimed in claim 1, is characterized in that, at least one watch-dog described comprises: the equipment of panalarm, switching value equipment, tripping operation opertaing device, temperature sensor or other Sensor monitoring types.

5. the system as claimed in claim 1, is characterized in that, described single-chip microcomputer is 8 single-chip microcomputers.

6. system as claimed in claim 5, it is characterized in that, described single-chip microcomputer is STC series monolithic, 51 single-chip microcomputers or PIC series monolithic.

7. the system as claimed in claim 1, is characterized in that, the processor of described main control equipment is connected by two common I/O interfaces with described single-chip microcomputer, one of them transmission of control signals, another transmission of data signals.

8. the system as claimed in claim 1, is characterized in that, the Modular circuit design of described single-chip microcomputer is independent subcard, and described subcard is connected by common I/O Interface realization with the motherboard at the processor place of described main control equipment.